Solar panel and photovoltaic device

Abstract

The present application relates to a solar panel and a photovoltaic device. The solar panel comprises a power generation unit and a wiring assembly, and the wiring assembly comprises a flat conductive connector, an insulating layer, and a protective layer. The flat conductive connector is electrically connected to the power generation unit. The thickness of the flat conductive connector is less than the width of the flat conductive connector. The insulating layer covers the surface of the flat conductive connector, and the protective layer covers the surface of the insulating layer, to prevent external substances from entering the interior of the flat conductive connector. Because the thickness of the flat conductive connector is less than the width of the flat conductive connector, the flat conductive connector is not prone to breakage and fixation thereof is facilitated. In addition, this configuration can prevent adhesive from entering the interior of the flat conductive connector, thereby avoiding hardening and increased breakage susceptibility of the flat conductive connector.

Description

Solar panel and photovoltaic device

[0001] The present application claims priority to the Chinese Patent Application No. 202422164266.1, filed on September 4, 2024, entitled "Solar panel", and the Chinese Patent Application No. 202520162928.3, filed on January 23, 2025, entitled "Wiring assembly and photovoltaic device", the contents of which are incorporated herein by reference in their entirety. TECHNICAL FIELD

[0002] The present application relates to the technical field of solar cells, in particular to a solar panel and a photovoltaic device. BACKGROUND

[0003] At present, the wires of the solar panel generally adopt round cables or flat cables. The diameter of the round cable is large. The inventor realizes that in the use scene of the house car, the wiring is difficult to arrange, and when the round cable is arranged at a high position, the wind resistance is large, and it is difficult to fix the round cable by using the adhesive fixing method, thereby causing poor stability of the round cable. In order to ensure the flat function and facilitate the bending of the wiring, the adhesive layer on the surface of the output line of the flat cable is thin, which is easy to break the internal output line after long-term bending. The braided copper strip has strong bendability, but the adhesive is easy to penetrate into the braided copper strip during the manufacturing process, which can cause the braided copper strip to harden, thereby causing the wire to be easy to break.

[0004] Therefore, how to design a solar panel which is convenient for the fixed installation of the wire and ensures that the wire is not easy to be damaged becomes a problem to be solved at present.

[0005] CONTENT

[0006] The purpose of the present application is to provide a solar panel and a photovoltaic device to solve the problems of the wire not being easy to be fixed and being easy to be broken in the prior art.

[0007] In a first aspect, the embodiments of the present application provide a solar panel, which comprises a power generation unit and a wiring assembly, the wiring assembly comprising a flat conductive connecting piece, an insulating layer and a protective layer, the flat conductive connecting piece being electrically connected with the power generation unit, the thickness of the flat conductive connecting piece being less than the width of the flat conductive connecting piece, the insulating layer being coated on the surface of the flat conductive connecting piece, and the protective layer covering the surface of the insulating layer to prevent external substances from entering the inside of the flat conductive connecting piece.

[0008] In a second aspect, the embodiments of the present application provide a photovoltaic device, which comprises the above-mentioned solar panel.

[0009] The application has the advantages that the flat conductive connecting piece is not easy to be broken, and the stability and reliability of the flat conductive connecting piece are improved. The insulation layer insulates the flat conductive connecting piece to prevent circuit short circuit. The protective layer protects the flat conductive connecting piece to avoid the problems of hardening and easy breaking of the flat conductive connecting piece.

[0010] It should be understood that the foregoing general description and the following detailed description are only examples and are not restrictive of the application. BRIEF DESCRIPTION OF DRAWINGS

[0011] Fig. 1 is a schematic diagram of a part of the structure of a wiring assembly in an embodiment of the application;

[0012] Fig. 2 is a schematic diagram of an insulation layer and a flat conductor in an embodiment of the application;

[0013] Fig. 3 is a schematic diagram of a part of the structure of a wiring assembly in another embodiment of the application;

[0014] Fig. 4 is a schematic diagram of a flat conductive connecting piece in an embodiment of the application;

[0015] Fig. 5 is a schematic diagram of a solar panel in an embodiment of the application;

[0016] Fig. 6 is a schematic diagram of a solar panel in another embodiment of the application;

[0017] Fig. 7 is an exploded view of a wiring assembly in another embodiment of the application;

[0018] Fig. 8 is a schematic diagram of a part of the structure of a wiring assembly in an embodiment of the application;

[0019] Fig. 9 is a schematic diagram of a connection between a power generation unit and a flat conductive connecting piece in an embodiment of the application;

[0020] Fig. 10 is a schematic diagram of a connection between a power generation unit and a flat conductive connecting piece through a glue film layer in an embodiment of the application.

[0021] 100-solar panel; 10-wiring assembly; 11-flat conductive connector; 111-body; 1111-flat conductor; 1111a-first flat conductor; 1111b-second flat conductor; 1112-woven copper strip; 1113-tinned copper wire; 112-connector; 1121-first connector; 1122-second connector; 113-adaptor; 12-insulation layer; 121-first insulation layer; 122-second insulation layer; 123-separation groove; 13-protection layer; 131-glue groove; 141-first buffer; 142-second buffer; 151-fixing member; 152-limiting member; 16-junction box; 161-upper cover; 162-lower cover; 1621-mounting hole; 163-accommodation space; 164-conductive copper sheet; 1641-first conductive copper sheet; 1642-second conductive copper sheet; 165-diode; 17-output connector; 171-male plug; 172-female plug; 18-protection sleeve; 19-anti-lost rope; 20-power generation unit; 21-adhesive film layer.

[0022] The accompanying drawings, which are incorporated herein and constitute part of the specification, illustrate embodiments consistent with the application and, together with the description, serve to explain the principles of the application. DETAILED DESCRIPTION

[0023] In order to more clearly understand the above objectives, features and advantages of the present application, the following further specifically describes the present application with reference to the accompanying drawings and specific embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0024] In the following description, a large number of specific details are set forth in order to facilitate a thorough understanding of the present application, however, the present application can also be implemented in other ways different from those described herein, and therefore, the protection scope of the present application is not limited by the specific embodiments disclosed below.

[0025] The solar panel and photovoltaic device according to some embodiments of the present application are described below with reference to FIGS. 1-10. Wherein, A refers to the width direction of the flat conductive connector, and B refers to the thickness direction of the flat conductive connector.

[0026] As shown in FIGS. 1 and 5, the solar panel 100 according to an embodiment of the present application includes a wiring assembly 10 and a power generation unit, the wiring assembly 10 includes a flat conductive connector 11, an insulation layer 12 and a protection layer 13. The flat conductive connector 11 is electrically connected with the power generation unit, and the thickness of the flat conductive connector 11 is less than the width of the flat conductive connector 11. The insulation layer 12 is coated on the surface of the flat conductive connector 11. The protection layer 13 covers the surface of the insulation layer 12, for preventing external substances from entering the inside of the flat conductive connector 11.

[0027] The power generation units of the solar panel 100 are electrically connected with the flat conductive connector 11, so as to realize the collection and transmission of electric energy. The thickness of the flat conductive connector 11 is less than the width of the flat conductive connector 11, so as to ensure that the flat conductive connector 11 is not easy to be broken, and is also beneficial to the fixation of the flat conductive connector 11. The insulating layer 12 is coated on the surface of the flat conductive connector 11, so as to insulate the flat conductive connector 11 and prevent the short circuit of the circuit. In order to prevent external substances from entering the inside of the flat conductive connector 11, for example, in the manufacturing process, the colloid is easy to enter the inside of the flat conductive connector 11, therefore, the protective layer 13 is arranged on the surface of the flat conductive connector 11, so as to protect the flat conductive connector 11, thereby avoiding the problem that the colloid enters the inside of the flat conductive connector 11 to cause the hardening and easy breaking of the flat conductive connector 11.

[0028] As shown in FIG. 1, in a possible implementation, the flat conductive connector 11 includes a body 111, the body 111 includes at least two flat conductors 1111, the flat conductors 1111 are arranged at intervals, the number of the insulating layers 12 corresponds to the number of the flat conductors 1111, and each insulating layer 12 coats one flat conductor 1111.

[0029] The flat conductors 1111 described above are used for conducting electricity, and the insulating layer 12 can insulate the flat conductors 1111 to prevent the short circuit of the circuit.

[0030] As shown in FIG. 2, in some embodiments, the body 111 can include two flat conductors described above, which are a first flat conductor 1111a and a second flat conductor 1111b arranged side by side and at intervals, wherein the first flat conductor 1111a can be a positive conductor, and the second flat conductor 1111b can be a negative conductor. The number of the insulating layers 12 is two, which are a first insulating layer 121 and a second insulating layer 122, the first insulating layer 121 coats the first flat conductor 1111a, and the second insulating layer 122 coats the second flat conductor 1111b.

[0031] The insulating layer 12 can separate the first flat conductor 1111a and the second flat conductor 1111b, so as to protect them by using the insulating layer 12, prevent the mutual interference between the first flat conductor 1111a and the second flat conductor 1111b, and prevent the first flat conductor 1111a and the second flat conductor 1111b from being interfered by the outside. At the same time, this design is beneficial to improving the structural compactness of the wiring assembly 10, and can provide convenient conditions for the miniaturization design and lightweight design of the wiring assembly 10.

[0032] In some embodiments, the body comprises a plurality of flat conductors, and a plurality of insulating layers, each insulating layer covering one flat conductor. The plurality of flat conductors are spaced apart, and each insulating layer covers one flat conductor, thereby achieving insulation between the plurality of flat conductors. In some embodiments, the plurality of flat conductors comprise positive conductors and negative conductors, that is, a portion of the flat conductors are positive conductors, and another portion of the flat conductors are negative conductors.

[0033] As mentioned above, the outer surface of each flat conductor is covered by an insulating layer. Optionally, the insulating layers can be connected to form an integrated structure. Referring to FIG. 2, the first insulating layer 121 and the second insulating layer 122 can form an integrated structure, thereby achieving mutual isolation between the flat conductors by the insulating layers. At the same time, the stability and sealing of the insulating layer as a whole are ensured, further improving the insulation effect of the flat conductive connector and improving the safety of the solar panel in use.

[0034] As shown in FIG. 2, in one possible implementation, the insulating layer 12 is provided with a separation groove 123, which is located between two adjacent flat conductors (for example, the first flat conductor 1111a and the second flat conductor 1111b).

[0035] The area structure of the insulating layer 12 provided with the separation groove 123 has low strength, and the insulating layer 12 can be directly torn along the position of the separation groove 123, thereby separating the connected flat conductors to make the mutually connected flat conductors into independent flat conductors for use, thereby increasing the flexibility of the flat conductive connector in use to meet the wiring needs of different solar panels.

[0036] As shown in FIG. 2, in one possible implementation, the separation groove 123 is a V-shaped groove, and the number of V-shaped grooves is a plurality, which are arranged on opposite sides of the insulating layer 12.

[0037] The separation groove 123 is located on opposite sides of the insulating layer 12, that is, the separation groove 123 is located on the upper surface and the lower surface of the insulating layer 12 along the thickness direction B of the body 111. This design further facilitates the separation operation between the flat conductors (for example, the first flat conductor 1111a and the second flat conductor 1111b). At the same time, it can also enhance the flexibility of the flat conductive connector to some extent, making the flat conductive connector more smooth when bending to adapt to complex wiring environments. At the same time, the V-shaped groove structure also helps to disperse stress and reduce damage to the flat conductive connector when bending.

[0038] As shown in FIG. 1, in one possible implementation, the flat conductors 1111 are spaced apart along the width direction A of the flat conductors 1111, and the spacing distance between two adjacent flat conductors 1111 is greater than or equal to 10 mm.

[0039] Two or more flat conductors 1111 can be arranged at intervals along the width direction of the flat conductors 1111, so that the flat conductive connector 11 formed thereby is also flat in its entirety, thereby facilitating bending and fixing of the flat conductive connector 11. The interval distance between adjacent two flat conductors 1111 is greater than or equal to 10 mm, thereby facilitating insulation between the plurality of flat conductors 1111 and arrangement of the insulation layer 12.

[0040] Optionally, after the insulation layer is arranged, the gaps between the plurality of flat conductors can be filled with an adhesive film layer to fix the plurality of flat conductors and prevent the plurality of flat conductors from moving.

[0041] As shown in FIG. 3, in a possible implementation, the wiring assembly 10 further comprises an adhesive groove 131 arranged on the outer surface of the protective layer 13, and the adhesive groove 131 is used to bond with a power generation unit (not shown in the figure).

[0042] The power generation unit can be provided with an adhesive film layer (not shown in the figure), which is bonded with the protective layer 13 to fix the flat conductive connector 11. The adhesive groove 131 is arranged on the outer surface of the protective layer 13 to cooperate with the adhesive film layer, thereby achieving connection between the power generation unit and the flat conductive connector 11. By arranging the adhesive groove 131, the contact area between the protective layer 13 and the adhesive film layer can be increased, thereby enabling the flat conductive connector 11 to be fixed more stably.

[0043] As shown in FIG. 3, in a possible implementation, the adhesive groove 131 comprises at least one of a corrugated adhesive groove, a concave-convex adhesive groove, a honeycomb adhesive groove, and a mesh adhesive groove.

[0044] The above-mentioned "corrugated", "concave-convex", "honeycomb", and "mesh" all refer to the shape of the adhesive groove 131. In some embodiments, the adhesive grooves 131 on the outer surface of the protective layer 13 are all of the same shape, for example, the adhesive grooves 131 are all corrugated adhesive grooves. In other embodiments, the adhesive grooves 131 on the outer surface of the protective layer 13 are of different shapes, for example, the outer surface of the protective layer 13 is provided with corrugated adhesive grooves in some regions and concave-convex adhesive grooves in other regions. Different adhesive grooves 131 can be arranged according to actual conditions to meet different working condition requirements.

[0045] As shown in FIG. 3, in a possible implementation, the insulation layer 12 comprises a polyimide adhesive tape.

[0046] The polyimide adhesive tape has high temperature resistance, good electrical insulation, flame retardancy, and radiation resistance, thereby facilitating improvement of the reliability of the insulation layer 12 and ensuring normal and stable use of the flat conductive connector 11.

[0047] As shown in FIG. 3, in a possible implementation, the protective layer 13 is bonded to the surface of the insulating layer 12, and the protective layer 13 includes at least one of a soft polyvinyl chloride layer, a polyester layer, and a fluoroplastic layer.

[0048] The soft polyvinyl chloride layer, the polyester layer, and the fluoroplastic layer have certain bonding properties, that is, the protective layer 13 can be bonded to the insulating layer 12 through the soft polyvinyl chloride layer, the polyester layer, and the fluoroplastic layer, and at the same time, these high molecular materials can avoid scratching or aging of the insulating layer 12 and have a flame-retardant effect, which can ensure the electrical properties of the flat conductive connector 11.

[0049] In some embodiments, the protective layer has a single-layer structure, for example, the protective layer is a soft polyvinyl chloride layer.

[0050] In some other embodiments, the protective layer has a composite structure, for example, the protective layer is a composite of a soft polyvinyl chloride layer and a polyester layer,

[0051] As shown in FIG. 4, in a possible implementation, the flat conductive connector 11 includes a braided copper strip 1112, and the braided copper strip 1112 includes a plurality of tinned copper wires 1113.

[0052] Referring to FIG. 1, optionally, the flat conductor 1111 described above can be the braided copper strip 1112. The braided copper strip 1112 is formed by interweaving a plurality of tinned copper wires 1113 into a flat shape and is pressed by a rolling machine, which can ensure the stability of the interweaving of the copper wires and also enable the braided copper strip 1112 to have good flexibility, which helps the flat conductive connector 11 to adapt to different installation environments and not to be easily broken when subjected to external pulling force, thereby improving the durability of the flat conductive connector 11 and ensuring the electrical conductivity.

[0053] As shown in FIG. 4, in a possible implementation, the diameter of the tinned copper wire 1113 is greater than or equal to 0.02 mm and less than or equal to 0.1 mm.

[0054] The diameter of the tinned copper wire 1113 can be 0.02 mm, 0.03 mm, 0.04 mm, 0.05 mm, 0.06 mm, 0.07 mm, 0.08 mm, 0.09 mm, or 0.1 mm, and of course can also be other values within the above range. The above limitation on the diameter of the tinned copper wire 1113 is beneficial for both the manufacture of the braided copper strip 1112 and the guarantee of the flexibility and electrical conductivity of the braided copper strip 1112.

[0055] Optionally, the diameter of the tinned copper wire 1113 is greater than or equal to 0.05 mm and less than or equal to 0.08 mm.

[0056] As shown in FIG. 3, in one possible implementation, the total thickness of the flat conductive connecting piece 11, the insulating layer 12 and the protective layer 13 is greater than or equal to 1 mm and less than or equal to 3 mm.

[0057] The total thickness of the flat conductive connecting piece 11, the insulating layer 12 and the protective layer 13 can be 1 mm, 1.2 mm, 1.4 mm, 1.6 mm, 1.8 mm, 2 mm, 2.2 mm, 2.4 mm, 2.6 mm, 2.8 mm or 3 mm, and of course can be other values within the above range. Limiting the total thickness of the flat conductive connecting piece 11, the insulating layer 12 and the protective layer 13 to between 1 mm and 3 mm is conducive to bending of the flat conductive connecting piece 11 and facilitates use of the flat conductive connecting piece 11.

[0058] Alternatively, the total thickness of the flat conductive connecting piece 11, the insulating layer 12 and the protective layer 13 is greater than or equal to 1.5 mm and less than or equal to 2.5 mm.

[0059] As shown in FIG. 3, in one possible implementation, the thickness of the flat conductive connecting piece 11 is greater than or equal to 0.1 mm and less than or equal to 0.5 mm. For example, the thickness of the flat conductive connecting piece 11 can be 0.1 mm, 0.15 mm, 0.2 mm, 0.25 mm, 0.3 mm, 0.35 mm, 0.4 mm, 0.45 mm or 0.5 mm, and of course can be other values within the above range. Limiting the thickness of the flat conductive connecting piece 11 to between 0.1 mm and 0.5 mm is conducive to bending of the flat conductive connecting piece 11.

[0060] The width of the flat conductive connecting piece 11 is greater than or equal to 2 mm and less than or equal to 10 mm. For example, the width of the flat conductive connecting piece 11 can be 2 mm, 3 mm, 4 mm, 5 mm, 6 mm, 7 mm, 8 mm, 9 mm or 10 mm, and of course can be other values within the above range. Limiting the width of the flat conductive connecting piece 11 to be greater than or equal to 2 mm and less than or equal to 10 mm is conducive to securing of the flat conductive connecting piece 11.

[0061] The thickness of the insulating layer 12 is greater than or equal to 0.01 mm and less than or equal to 0.1 mm. For example, the thickness of the insulating layer 12 can be 0.01 mm, 0.02 mm, 0.04 mm, 0.06 mm, 0.08 mm or 0.1 mm, and of course can be other values within the above range. Limiting the thickness of the insulating layer 12 to be greater than or equal to 0.01 mm and less than or equal to 0.1 mm effectively achieves insulation and prevents short circuits, and also enables the flat conductive connecting piece 11 to not be too thick and affect bending performance.

[0062] As shown in FIG. 3, in one possible implementation, the thickness of the flat conductive connector 11 is greater than or equal to 0.1 mm and less than or equal to 0.5 mm, or the width of the flat conductive connector 11 is greater than or equal to 2 mm and less than or equal to 10 mm, or the thickness of the insulation layer 12 is greater than or equal to 0.01 mm and less than or equal to 0.1 mm.

[0063] Optionally, the thickness of the flat conductive connector 11 is greater than or equal to 0.2 mm and less than or equal to 0.4 mm.

[0064] Optionally, the width of the flat conductive connector 11 is greater than or equal to 3 mm and less than or equal to 6 mm.

[0065] Optionally, the thickness of the insulation layer 12 is greater than or equal to 0.03 mm and less than or equal to 0.08 mm.

[0066] Another embodiment of the present application provides a wiring assembly including a flat conductive connector, an insulation layer, and a protective layer. The flat conductive connector can be a flat cable, which includes one or more flat cable units connected side by side, and the insulation layers of adjacent two flat cable units are adhesively connected or integrally connected, and each flat cable unit is in the form of a flat strip.

[0067] Optionally, the flat cable includes a flat conductor, an insulation layer, and a protective layer.

[0068] Optionally, the flat conductor is a braided copper tape.

[0069] Optionally, the insulation layer is a thin polyimide tape, which is used to wrap the braided copper tape to prevent the adhesive of the protective layer from penetrating onto the braided copper tape.

[0070] Optionally, the braided copper tape includes a plurality of copper wires, each copper wire is made of tinned copper, and has a diameter of 0.02 mm to 0.1 mm, and the plurality of copper wires are twisted to form a bundle (generally 5 to 20 wires), and the plurality of bundles are twisted to form the braided copper tape.

[0071] Optionally, the flat cable is a DC wire, has a flat overall shape, and has a smooth surface, and is adhesively fixed by using a solid 3M adhesive.

[0072] Optionally, the flat cable includes two symmetrical flat cable units, two insulation layers, and an outermost protective layer, and has an overall thickness of 1 mm to 3 mm.

[0073] Optionally, the braided copper tape has a thickness of 0.1 mm to 0.5 mm and a width of 2 mm to 10 mm. The insulation layer is made of a polyimide tape, which has an adhesive on one side, and has an overall thickness of 0.01 mm to 0.1 mm, and the width of the polyimide tape can wrap the braided copper tape, and the inner side of the adhesive of the polyimide tape is in contact with the braided copper tape.

[0074] In the process of manufacturing the flat cable, the adhesive surface of the insulating layer is first bonded with the braided copper strip, and then the protective layer is covered on the outer surface of the two insulating layers by extrusion molding. The protective layer is generally made of soft polyvinyl chloride, polyester and fluoroplastic high molecular materials, which can prevent the insulating layer from being scratched or aged, has flame retardant effect, and ensures the electrical performance of the wiring assembly. The interval between two adjacent braided copper strips is more than 10 mm, and the gap is filled with glue to prevent short circuit or short circuit after thermal expansion.

[0075] Optionally, the overall shape of the flat cable is flat.

[0076] Optionally, one side or both sides of the flat cable are concave-convex in shape, so that liquid glue (such as AB glue, 502 glue, and three-force glue) can be used for installation and fixation. The concave part is a glue groove 131, which provides a larger contact area between the glue and the structure.

[0077] In the embodiment of the present application, the thickness of the flat conductive connecting piece is less than the width of the flat conductive connecting piece, so that the flat conductive connecting piece is not easy to be broken, and the fixation of the flat conductive connecting piece is also facilitated. The insulating layer covers the surface of the flat conductive connecting piece, which can insulate the flat conductive connecting piece and prevent short circuit of the circuit. In order to prevent external substances from entering the interior of the flat conductive connecting piece, for example, glue is easy to enter the interior of the flat conductive connecting piece during the manufacturing process, therefore, a protective layer is arranged on the surface of the flat conductive connecting piece to protect the flat conductive connecting piece, so that the problem of hardening and easy breaking of the flat conductive connecting piece caused by glue entering the interior of the flat conductive connecting piece can be avoided.

[0078] In the vehicle and ship installation scene, the flat conductive connecting piece of the embodiment of the present application requires smaller installation gap and does not need to be punched separately, which is suitable for wiring between the gaps of the vehicle window and the rear cover. At the same time, the flat conductive connecting piece has a larger contact area with the mounting piece, which is convenient for fixation and installation with adhesive glue. In addition, the flat conductive connecting piece is easier to hide, has smaller height, and smaller wind resistance.

[0079] On the other hand, the braided copper band conductor is wrapped with an insulating thin rubber tape, and the braided copper band still maintains good flexibility, can ensure that it is not broken under long-term bending, thereby improving the reliability of the flat conductive connecting piece and prolonging the service life of the flat conductive connecting piece. As shown in FIGS. 5-7, the wiring assembly 10 provided by an embodiment of the present application further includes a junction box 16, an output terminal 17, a first buffer 141 and a second buffer 142. The flat conductive connecting piece 11 includes a connecting head 112 and a transition head 113, and the connecting head 112 and the transition head 113 are connected to two ends of the body 111 respectively. The junction box 16 is connected to a first end of the connecting head 112, the output terminal 17 is connected to a second end of the transition head 113, the first buffer 141 is arranged at a connection between the body 111 and the connecting head 112, and the second buffer 142 is arranged at a connection between the body 111 and the transition head 113.

[0080] The electrical energy of the solar panel 100 flows to an electrical equipment (not shown in the figure) through the junction box 16, the flat conductive connecting piece 11 and the output terminal 17 in sequence. The connecting head 112 is arranged at one end of the body 111, and the first buffer 141 is arranged between the connecting head 112 and the body 111, so that when the connecting head 112 is installed in the junction box 16, the first buffer 141 can be used to protect the flat conductive connecting piece 11, preventing the flat conductive connecting piece 11 from being damaged due to direct contact with the junction box 16 when bending and pulling occur. The transition head 113 is arranged at the other end of the body 111 of the flat conductive connecting piece 11, and the second buffer 142 is arranged between the transition head 113 and the body 111, so that when the transition head 113 is connected to the output terminal 17, the second buffer 142 can be used to protect the flat conductive connecting piece 11, preventing the flat conductive connecting piece 11 from being damaged due to direct contact with the output terminal 17 when bending and pulling occur. The embodiment of the present application can maintain good flexibility of the flat conductive connecting piece 11 by arranging the first buffer 141 and the second buffer 142, avoiding damage to the conductor when the flat conductive connecting piece 11 is frequently bent, thereby prolonging the service life of the product.

[0081] In another embodiment, the wiring assembly includes any one of the first buffer and the second buffer.

[0082] As shown in FIGS. 5-7, in a possible implementation, the junction box 16 includes an upper cover 161, a lower cover 162 and a conductive copper sheet 164. The lower cover 162 and the upper cover 161 enclose a containing space 163, and the conductive copper sheet 164 is arranged in the containing space 163. The lower cover 162 is provided with a mounting hole 1621, and the connecting head 112 of the flat conductive connecting piece 11 passes through the mounting hole 1621 and is connected to the conductive copper sheet 164.

[0083] The upper cover 161 and the lower cover 162 of the junction box 16 enclose a containing space 163, which protects the internal conductive copper sheet 164, diode 165 and other components from being eroded by the external environment. The conductive copper sheet 164 is arranged in the containing space 163 and is used to connect the flat conductive connecting piece 11 to realize current transmission. The mounting hole 1621 facilitates the flat conductive connecting piece 11 to pass through and connect with the conductive copper sheet 164, so that the connection structure of the junction box 16 and the flat conductive connecting piece 11 is more compact, and the connection stability of the solar panel 100 is ensured.

[0084] As shown in FIGS. 7 and 8, in one possible implementation, the connecting head 112 includes a first connecting head 1121 and a second connecting head 1122, the first connecting head 1121 and the second connecting head 1122 are respectively connected with corresponding flat conductors 1111, the conductive copper sheet 164 includes a first conductive copper sheet 1641 and a second conductive copper sheet 1642, the first conductive copper sheet 1641 is connected with the first connecting head 1121, and the second conductive copper sheet 1642 is connected with the second connecting head 1122. The junction box 16 further includes a diode 165, the diode 165 is arranged in the containing space 163, and the diode 165 is located between the first conductive copper sheet 1641 and the second conductive copper sheet 1642, wherein the anode of the diode 165 is connected with the first conductive copper sheet 1641, and the cathode of the diode 165 is connected with the second conductive copper sheet 1642.

[0085] The positive electrode of the power generation unit (not shown in the figure) of the solar panel is connected to the first conductive copper sheet 1641, the negative electrode of the power generation unit is connected to the second conductive copper sheet 1642, and the first conductive copper sheet 1641 and the second conductive copper sheet 1642 are respectively connected with the flat conductors 1111 corresponding to the electrode polarity, that is, the first conductive copper sheet 1641 and the second conductive copper sheet 1642 are respectively connected with the positive electrode conductor and the negative electrode conductor, so as to ensure effective current transmission. The diode 165 is arranged between the first conductive copper sheet 1641 and the second conductive copper sheet 1642, and the anode of the diode 165 is connected with the first conductive copper sheet 1641, and the cathode of the diode 165 is connected with the second conductive copper sheet 1642, which can play a role of one-way conduction and prevent current from flowing in reverse. Specifically, when the light condition changes or other factors affect, the current may flow in reverse. For example, at night or when the light is insufficient, the power generation unit no longer generates electricity, but may become a "load". Without the diode 165, the current of other parts may flow back to the power generation unit, causing the power generation unit to heat up or even be damaged. The diode 165 has one-way conductivity, and the resistance is very small when it is forward biased, so the current can flow smoothly. When it is reverse biased, the current can hardly pass through. By arranging the diode 165 between the two welded conductive copper sheets 164, the current can be effectively prevented from flowing in reverse, ensuring that the current can only flow in the specified direction, protecting the circuit elements in the solar panel, and improving the stability and reliability.

[0086] As shown in FIG. 7, in a possible implementation, the wiring assembly 10 further comprises a fixing member 151 and a limiting member 152. The fixing member 151 is sleeved on the flat conductive connecting piece 11, and is fixedly connected with the flat conductive connecting piece 11 and located in the accommodating space 163. The limiting member 152 is arranged in the accommodating space 163, and is located between the fixing member 151 and the mounting hole 1621, and is used for limiting the movement of the flat conductive connecting piece 11 in the accommodating space 163.

[0087] The fixing member 151 can be an SR (Strain Relief, strain relief) fixing member, so as to enhance the stability of the connection between the flat conductive connecting piece 11 and the junction box 16, and prevent the flat conductive connecting piece 11 from loosening. The limiting member 152 is located between the fixing member 151 and the mounting hole 1621, and is used for limiting the movement of the flat conductive connecting piece 11 in the accommodating space 163, that is, when the flat conductive connecting piece 11 is pulled by the outside, the flat conductive connecting piece 11 in the junction box 16 will not be pulled, so as to guarantee the fixing effect of the flat conductive connecting piece 11 in the junction box 16, prevent the flat conductive connecting piece 11 from being pulled to cause poor contact or disconnection between the flat conductive connecting piece 11 and the conductive copper sheet 164, and thus improve the stability of the wiring assembly 10.

[0088] As shown in FIGS. 5 to 7, in a possible implementation, the output connector 17 comprises a male plug 171 and a female plug 172. One end of the male plug 171 is connected with the second end of the adapter 113, and the female plug 172 is inserted with the end of the male plug 171 away from the adapter 113. The output connector 17 comprises a protective sleeve 18 and a loss-preventing rope 19. The protective sleeve 18 is sleeved outside the male plug 171 and located at the connection between the male plug 171 and the adapter 113. One end of the loss-preventing rope 19 is connected with the male plug 171, and the other end of the loss-preventing rope 19 is connected with the female plug 172.

[0089] The male plug 171 and the female plug 172 constitute the output connector 17, which is convenient for plug-in connection with other devices, so as to realize quick and convenient connection between the solar panel 100 and external power consumption devices, and improve the convenience and universality of the device use. The protective sleeve 18 is sleeved outside the male plug 171 and located at the connection between the male plug 171 and the adapter 113, so as to protect the male plug 171 and the connection between the male plug 171 and the adapter 113 from damage caused by external interference. The protective sleeve 18 can be an insulating protective sleeve 18, so as to enhance the insulation performance of the output connector 17 and prevent electric shock accidents. The loss-preventing rope 19 has two ends connected with the male plug 171 and the female plug 172 respectively, so as to prevent the female plug 172 from being lost when the female plug 172 is not plugged with the male plug 171.

[0090] Optionally, the male plug 171 is an Anderson male plug, the female plug 172 is an Anderson female plug, and the protective sleeve 18 is an outer sleeve of the Anderson male plug.

[0091] As shown in FIG. 9, in some embodiments, the solar panel 100 includes at least two power generation units 20, and the two power generation units 20 are electrically connected through the flat conductive connecting piece 11.

[0092] In some embodiments, the solar panel is a foldable solar panel.

[0093] As shown in FIG. 10, in one possible implementation, the power generation unit 20 is provided with a glue film layer 21, and the glue film layer 21 is bonded with the protective layer 13 to fix the flat conductive connecting piece 11. Please refer to FIG. 3 at the same time.

[0094] The glue film layer 21 is bonded with the protective layer 13 to fix the flat conductive connecting piece 11. As mentioned above, the outer surface of the protective layer 13 is provided with a glue retaining groove 131, and the glue retaining groove 131 cooperates with the glue film layer 21 to realize the connection between the power generation unit 20 and the flat conductive connecting piece 11.

[0095] The embodiment of the present application provides a photovoltaic device including the above-mentioned solar panel. Since the solar panel has the above-mentioned technical effects, the photovoltaic device including the solar panel also has the above-mentioned technical effects, which will not be described here.

[0096] The solar panel and the photovoltaic device will be introduced below in combination with a specific embodiment.

[0097] A double-strand flat cable includes two flat cable units connected side by side, and the internal cable of each unit is formed into a flat shape by twisting and weaving a plurality of thin copper wires and is pressed by a roller press. In this way, the stability of the mutual twisting of the copper wires is ensured, the degree of twisting of the thin copper wire cable itself is also ensured, and the diameter of the copper wire passing through the cross-sectional area of each unit can be adjusted to control the number of copper wires, thereby adjusting the flexibility of the flat cable. The surface of the cable unit is wrapped with a soft glue material (insulation layer), such as PVC (Polyvinyl Chloride), silicone, TPU (Thermoplastic Polyurethane), etc., to ensure the insulation performance and flexibility of the wire. The soft glue on the surface of the two flat cable units connected side by side also has a separation groove, which can be separated into two separate cables.

[0098] Cable and Anderson connector combination: including flat cable, Anderson connector (output connector) and wire SR fixing piece (fixing piece).

[0099] Flat cable and terminal box fixing method and application: including the upper cover of the terminal box, the lower cover of the terminal box, the conductive copper sheet, the diode, the flat cable product (flat conductive connector), the wire spring (limiting piece), the Anderson adapter (male plug) and the silica gel rope (anti-lost rope).

[0100] In the related art, the wire of the solar panel generally uses a round cable. Since the diameter of the round cable is large, when the line needs to pass through a narrow space such as a window in a recreational vehicle, a yacht or the like, the wiring and fixing are greatly limited by the space. Compared with the prior art, the flat cable is easy to bend due to its flat and thin characteristics, and the cable wiring is flexible and variable, and the space is less limited, which has great advantages in many special scene applications.

[0101] In another specific embodiment, the wiring assembly includes a double-stranded flat cable product (flat conductive connector), a terminal box body (terminal box), a wire fixing mechanism (fixing piece) and an output connector.

[0102] Optionally, the wire fixing mechanism is a wire SR fixing piece, the first buffer piece is a bending softening structure, the protective sleeve is an Anderson male head outer cover, the second buffer piece is a bending softening structure, and the male plug is an Anderson connector.

[0103] Optionally, the wiring assembly can include a waterproof silica gel ring.

[0104] Optionally, the double-stranded flat cable product includes a first flat conductor and a second flat conductor, the first flat conductor and the second flat conductor are braided copper strips, and a single wire is made of tinned copper. The insulation layer is wrapped with insulating soft rubber material, and the separation groove on the insulation layer is designed with a V-shaped groove to facilitate separating the double-stranded wire into two single-stranded wires for use when needed.

[0105] The details of the flat conductive connector and the terminal box in the storage state are shown in FIG. 5, and the overall appearance structure of the solar panel after assembly is shown in FIG. 6.

[0106] The flat cable and the mounting carrier of the above-mentioned embodiment have a larger contact area, can be fixed and installed with adhesive, are easy to hide, have a smaller height, and have smaller wind resistance on the moving load. When the wiring needs to pass through a narrow space such as a door and window, it can directly pass through the gap without affecting the normal closing and use of the door and window. The cable core of the flat cable is made of a plurality of thin wires wound and woven and pressed, and the Anderson connector and the wire SR fixing piece at both ends are designed with bending protection. When pulled, the flat cable has good flexibility and resilience. Due to the flexibility and the pressing manufacturing process, the flat cable is easy to store in a rolled shape, occupies less space, and is easier to package and transport.

[0107] In the present application, the term "a plurality of" refers to two or more, unless otherwise expressly specified. The terms "mounting", "connected", "connecting", "fixed", and the like, should be understood broadly, for example, "connected" can be fixed connection, or detachable connection, or integrally connected; "connected" can be directly connected, or indirectly connected through intermediate medium. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0108] In the description of the present application, the description of the terms "one embodiment", "some embodiments", "a specific embodiment", and the like, means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present application, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0109] The above is only optional embodiments of the present application and is not intended to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A solar panel characterized in that, It includes a power generation unit and a wiring assembly, the wiring assembly includes: A flat conductive connector, the flat conductive connector is electrically connected with the power generation unit, the thickness of the flat conductive connector is less than the width of the flat conductive connector; An insulating layer, the insulating layer is wrapped on the surface of the flat conductive connector; A protective layer, the protective layer covers the surface of the insulating layer, used to prevent external substances from entering the inside of the flat conductive connector.

2. The solar panel of claim 1, wherein, The flat conductive connector includes a body: The body includes at least two flat conductors, the flat conductors are arranged at intervals; The number of the insulating layer corresponds to the number of the flat conductors, each of the insulating layer wraps one of the flat conductors.

3. The solar panel of claim 2, wherein, The flat conductors are arranged at intervals along the width direction of the flat conductors, the interval distance of adjacent two flat conductors is greater than or equal to 10mm.

4. The solar panel of any one of claims 1 to 3, wherein, The wiring assembly further includes a glue groove: The glue groove is arranged on the outer surface of the protective layer, the glue groove is used to bond with the power generation unit.

5. The solar panel of claim 4, wherein, The glue groove includes at least one of a corrugated glue groove, a concave-convex glue groove, a honeycomb glue groove and a mesh glue groove.

6. The solar panel of any one of claims 1 to 5, wherein, The insulating layer includes a polyimide adhesive tape.

7. The solar panel according to any one of claims 2 to 6, characterized in that, The insulating layer is provided with a separation groove, the separation groove is located between adjacent two flat conductors.

8. The solar panel of claim 7, wherein, The separation groove is a V-shaped groove, the number of the V-shaped groove is multiple, and multiple V-shaped grooves are arranged on opposite sides of the insulating layer.

9. The solar panel of any one of claims 1 to 8, wherein, The protective layer is bonded to the surface of the insulating layer, and the protective layer includes at least one of a soft polyvinyl chloride layer, a polyester layer and a fluoroplastic layer.

10. The solar panel of any one of claims 1 to 9, wherein, The flat conductive connector includes a braided copper strip, the braided copper strip includes a plurality of tinned copper wires.

11. The solar panel of claim 10, wherein, The diameter of the tinned copper wire is greater than or equal to 0.02mm and less than or equal to 0.1mm.

12. The solar panel of any one of claims 1 to 11, wherein, The total thickness of the flat conductive connector, the insulating layer and the protective layer is greater than or equal to 1mm and less than or equal to 3mm.

13. The solar panel of any one of claims 1 to 12, wherein, The thickness of the flat conductive connector is greater than or equal to 0.1mm and less than or equal to 0.5mm; and / or The width of the flat conductive connector is greater than or equal to 2mm and less than or equal to 10mm; And / or The thickness of the insulating layer is greater than or equal to 0.01mm and less than or equal to 0.1mm.

14. The solar panel of any one of claims 2 to 13, wherein, The flat conductive connector includes a connector and an adapter, the connector and the adapter are respectively connected at two ends of the body, and; The wiring assembly further includes: A wiring box connected with a first end of the connector; An output connector connected with a second end of the adapter; A first buffer arranged at the connection between the body and the connector; and / or, A second buffer arranged at the connection between the body and the adapter.

15. The solar panel of claim 14, wherein, The wiring box includes: An upper cover; A lower cover surrounding a containing space with the upper cover; A conductive copper sheet arranged in the containing space; A mounting hole arranged on the lower cover, the connector of the flat conductive connector passes through the mounting hole and is connected with the conductive copper sheet.

16. The solar panel of claim 15, wherein, The connecting head comprises a first connecting head and a second connecting head, and the first connecting head and the second connecting head are connected with the corresponding flat conductor respectively; The conductive copper sheet comprises a first conductive copper sheet and a second conductive copper sheet, the first conductive copper sheet is connected with the first connecting head, and the second conductive copper sheet is connected with the second connecting head. The junction box further comprises a diode, the diode is arranged in the accommodation space, and the diode is located between the first conductive copper sheet and the second conductive copper sheet. The anode of the diode is connected with the first conductive copper sheet, and the cathode of the diode is connected with the second conductive copper sheet.

17. The solar panel of claim 15, wherein, The junction assembly further comprises: A fixing member, the fixing member is sleeved on the flat conductive connecting piece, the fixing member is fixedly connected with the flat conductive connecting piece, and is located in the accommodation space; A limiting member, the limiting member is arranged in the accommodation space, and the limiting member is located between the fixing member and the mounting hole, and is used for limiting the movement of the flat conductive connecting piece in the accommodation space.

18. The solar panel of any of claims 14-17, wherein, The output connector comprises: A male plug, one end of the male plug is connected with the second end of the adapter; A female plug, the female plug is inserted with one end of the male plug away from the adapter, and The output connector comprises a protective sleeve and an anti-lost rope, the protective sleeve is sleeved outside the male plug, and is located at the connection between the male plug and the adapter, one end of the anti-lost rope is connected with the male plug, and the other end of the anti-lost rope is connected with the female plug.

19. The solar panel of any one of claims 1 to 18, wherein, The power generation unit is provided with a glue film layer, the glue film layer is bonded with the protective layer to fix the flat conductive connecting piece.

20. A photovoltaic device, characterized by The photovoltaic device comprises: A solar panel, the solar panel is the solar panel according to any one of claims 1 to 19.

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